主题｜Topic：Breaking Drug Trafficking Chains: The Real Name Mailing Regulation and the Decline of Drug Use
时间｜Time：09.07（周四）16: 00-17: 30
地点｜Venue：文澴楼711教室｜Class Room 711，WENHUAN
主讲｜Speaker
梁平汉，中山大学政治与公共管理学院教授、博士生导师，中山大学“逸仙学者”，牛津大学“太古”高级访问学者。《产业经济评论》执行副主编，中国数量经济学会理事，中国运筹学会博弈论分会理事。主要研究地方政府行为、行为与实验经济学、博弈论、政商关系等。在 Economic Journal, Games and Economic Behavior，《经济研究》、《管理世界》、《经济学（季刊）》等国内外一流期刊发表论文数十篇，主持国家社科基金、国家自科基金资助项目多项，研究成果被《新华文摘》和人大复印报刊资料全文转载多次，获霍英东基金会优秀青年教师奖，教育部、四川省、重庆市等部省级奖励多项。
摘要｜Abstract
Postal service has become an important channel for drug trafficking worldwide. This paper examines the impact of the real-name mailing regulation on drug use in a Chinese province. Based on the universe of drug arrest, the difference-in-differences analysis shows that after the implementation of this regulation, on average, a town with 10 percent more courier services penetration exhibits a 0.78 percent reduction in drug arrest. This effect persists for at least a year. We exploit the early development of the courier service industry and use the early mulberry tree planting status as the Instrumental Variable for the courier service penetration today. We find no evidence that police activities change or drug users substitute alternative substances. Further analysis shows that the number of new drug users diminishes, while the number of addicted users remains. We suggest that this regulation on courier service companies is likely to be a cost-effective method to decrease the supply of drugs.
